Nikola Vitas

Monday, 3 October 2022

Robert Jelle Rutten (1942 - 2022)

So long, my teacher and friend. You will be hugely missed.
Posted by Nikola Vitas at 05:01
Labels: astronomy, chromosphere, DOT, radiative transfer, solar atmosphere, stellar atmospheres, sun, teaching, utrecht
Location: Santa Cruz de Tenerife, Spain
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GitHub

GitHub
In October 2017 all my IDL routines are moved from DropBox to GitHub repository:
https://github.com/nikolavitas

About Me

My photo
Nikola Vitas
I am a astrophysicist at Instituto de Astrofisica de Canarias (Tenerife, Spain). My main research interest is the physics of cool atmospheres (the Sun, cool stars, brown dwarfs and substellar objects, planets and the Earth)
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Contact

nikola.vitas.iac@gmail.com

(Please DO NOT use my iac.es address as the emails send to it often get lost.)

Pages

  • IDL library
  • Links
  • Old course materials in Serbo-Croatian
  • Books on my desk

Blog Archive

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      • Robert Jelle Rutten (1942 - 2022)
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Labels

abundances astronomy atomic physics cartoons chromosphere data data mining DOT EOS hermite IAC IDL integration interpolation Kubuntu lambda operator LaTeX links linux MacBook magnetic fields MANCHA MHD MURaM numerics observatory one-dimensional models opacities papers partial ionization phd philosophy radiative transfer science+art science+history science+politics smoothing solar atmosphere space spectropolarimetry spinoza splines statistics stellar atmospheres sun talks teaching telescope terskol thermodynamics thesis tips tools Ubuntu utrecht vtt Zeeman

My Blog List

  • Bad Astronomy
    I Went to See the New Taylor Swift “Movie.” It Crystallized the Problem This Time Around. - In a dark, muted theater, the issues were clear.
    4 hours ago
  • michaelgalloy.com
    IDL 9.2 released - The post IDL 9.2 released appeared first on michaelgalloy.com.
    1 month ago
  • Math ∩ Programming
    FHE@PDX 2025 - On Monday, July 14th 2025, I hosted a mini-workshop on homomorphic encryption at Google’s Portland, Oregon office. Though Portland is a small city, it’s be...
    2 months ago
  • Robin's Blog
    More links – June 2025 - I’ve got into a bit of a habit of writing occasional posts with links to interesting things I’ve found (probably because it’s a relatively easy blog post t...
    3 months ago
  • GaussianWaves
    Shrink to Win: Regularization’s Role in Model Success - Overfitting? Shrink your model! Regularization prevents memorization, enabling true learning & robust success. Discover how. A central problem in machine l...
    7 months ago
  • Strolls with my Dog
    Minimalist ESF, LSF, MTF by Monotonic Regression - Because the Slanted Edge Method of estimating the Spectral Frequency Response of a camera and lens is one of the more popular articles on this site, I have...
    8 months ago
  • AstroBetter
    The Rumor Mill for 2024-2025 is ready to go! - The Rumor Mill ready for the new season is now up and running: Postdoc and Term and Faculty and Staff. The archives from previous years remain available. A...
    1 year ago
  • Doctor Fortran
    Fortran 2023 has been Published! - ISO published the latest revision of the Fortran standard, Fortran 2023, on November 17. We’ve been working on this for five years, and it brings many ne...
    1 year ago
  • Science Books
    Colossus in the Colosseum - JF Ptak Science Books Quick Post Here's an interesting combination of sweat and electricity--an enormous electrical device that was on display in an exhibi...
    2 years ago
  • Variable Variability
    One more reason I dislike linking climate change and extinction - Life is full of suffering. Especially in its final stage. Sorry to bother you with this truism we spend so much effort keeping away. But visiting a hospi...
    3 years ago
  • Animals and Emotions
    How to know if your dog has dementia: the seven most common signs and symptoms - I felt devastated when our lovely family dog, Thierry, couldn’t keep up with us anymore when he was about 12 years old. He would pace around the house ai...
    3 years ago
  • Backyard Worlds: Planet 9
    One Hundred Thirty-One Brown Dwarfs - Hi Everyone! We’ve been so busy following up your discoveries that we have fallen behind in our blogging. Here’s a long overdue update on the project. Fir...
    6 years ago
  • Insights of a PhD student
    Extract data from a PNG/TIFF - Sometimes it’s useful to be able to extract data from a published figure. If the figure isn’t a vector based format (for which the numeric data is probably...
    6 years ago
  • AstroAtom
    Special Session EWASS 2018: Atomic and molecular data needs for astronomy and astrophysics - The aim of this session is to encourage further dialogue and promote knowledge transfer between astronomers with strong atomic and molecular data needs and...
    7 years ago
  • Bad Science
    How do the world’s biggest drug companies compare, in their transparency commitments? - Here’s a paper, and associated website, that we launch today: we have assessed, and then ranked, all the biggest drug companies in the world, to compare th...
    8 years ago
  • Space blog
    Sir Martin's Royal Aeronautical Society Annual Dinner speech - Read Sir Martin Sweeting's views on the first 4 decades of the space era and the role that it plays in our everyday lives.
    8 years ago
  • The Way the Future Blogs
    Betty’s Advice to the Lovelorn - By Elizabeth Anne Hull Nearly a year before Fred died, I wrote to a young friend who had recently become engaged in a same-sex relationship. It was in re...
    9 years ago
  • Climate Code Foundation
    How to run ccc-gistemp with ISTI - Thanks to Piotr Djaków for prompting me to write this post. ISTI is the International Surface Temperature Initiative, previously I’ve written about using c...
    10 years ago
  • Space Politics
    A new chapter - I wanted to pass along some personal news: I’ve taken a position starting today with SpaceNews, as a senior writer there. I’ll be writing there on a lot ...
    11 years ago
  • Built on Facts
    Is Bitcoin Currently Experiencing a Selfish Miner Attack? - Is Bitcoin Currently Experiencing a Selfish Miner Attack? Probably not. All right, now that you know my conclusion, let's see how to get there with data....
    11 years ago
  • Caltech Astrostats
    MCMC lecture - http://videolectures.net/mlss09uk_murray_mcmc/
    13 years ago
  • Living Reviews in Solar Physics - Blog
    -
  • The Eternal Universe
    -
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Ever tried. Ever failed. No matter.
Try again. Fail again. Fail better.
Samuel Beckett, Worstward Ho (1983)

Background image

The picture in the background shows the continuum image computed from a snapshot of magnetoconvection simulation with unipolar magnetic field. The mean intensity is about 200 G typical for a plage region. The simulation is performed using the MURaM code (Vögler, 2003). More details are available in my paper on the activity sensitivity of the MnI 5394.7 A line in the solar spectrum (Vitas et al, 2009).
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